Synology DiskStation DS918+ is a 4-bay NAS designed for small and medium-sized businesses and IT enthusiasts. Powered by a new Intel® Celeron® quad-core processor Synology DS920+ is an ideal network-attached storage solution to streamline data management and productivity.Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. Scalable storage design lets you start small and expand storage capacity with Synology DX517 as your data grows. Specifications CPU Model Intel Celeron J4125 CPU Architecture 64-bit CPU Frequency 4-core 2.0 (base) / 2.7 (burst) GHz System Memory 4 GB DDR4 non-ECC Memory Expandable up to 8 GB (4 GB + 4 GB) M.2 Drive Slots 2 (NVMe) Drive Bays 4 Maximum Internal Raw Capacity 64 TB (16 TB drive x 4) (Capacity may vary by RAID types) RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support) USB 3.0 Port 2 eSATA Port 1 Internal Drives •Btrfs•EXT4 Size (Height x Width x Depth) 166 mm x 199 mm x 223 mm Weight 2.24 kg Power Supply Unit / Adapter 100 W Power Frequency 50/60 Hz, Single Phase Operating Temperature 0°C to 40°C (32°F to 104°F) Warranty3 Years